Scratch

HI i wonder if any of you out there would be able to help me

Bit of a problem as usual prob a simple one   

Im creating a game where the sprite stays still if no keys are pressed and a animation sequence if the right/left key is pressed however it does not seem to like this code
        // when right key not pressed then switch to static sprite



and the following code

       // if right key is pressed then switch to particular sprites

     
      // if left key is pressed then switch to particular sprites

Using the not(pressed Right) Or not(pressed Left) code doesnt seem to work

am I coding this wrong or is there a simpler method of doing this

I will upload what I have got so far asap and re-post the link





I appreicate any guidance or references

cheers 






(I'm making a scrolling platforming game similar to a game called plok for the super nintendo difference being the main character is a  cartoon skeleton boxer called Mike )